Antisiphoning device



M- 1933- w. E. MORELAND 1,928,569

ANTI SIPHONING DEVICE Filed May 9, 1952 INVENTOR i ii f ffiii faa ZZZaweZQzzd WITNES%J%M v I ATTORNEY Patented Sept. 26, 1933 ANTISIPHONING DEVICE William E. Moreland, Atlanta, Ga., assignor of one-third to Charles E. Flowers and one-third to Warner V. Flowers, Atlanta, Ga.

Application May 9, 1

1 Claim.

This invention relates to fuel tanks, and its general object is to provide an anti-theft device primarily designed for the fuel tanks of motor vehicles, that will prevent the siphoning of fuel therefrom, yet will in no way interfere with the filling of the tanks.

A further object of the invention is to provide an anti-theft device and filling spout for fuel tanks that will prevent the taking of fuel there- 1 from, and which is simple in construction, does not include looks or the like, is inexpensive to manufacture and extremely efficient for the purpose intended.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a fragmentary sectional view taken through a fuel tank with my device applied thereto.

Figure 2 is a'fragmentary top plan view.

Figure 3 is a view similar to Figure 1 of a modified form.

Referring to the drawing in detail, and particularly to Figures 1 and'2, it will be noted that the fuel tank is indicated by the reference numeral 1 and extending through one vertical Wallthereof is a tubular member 2 which is substantially oval shape in cross section and curved upon itself in a manner to provide a gooseneck.

The inner end of the tubular member terminates adjacent the top of the fuel tank and is provided with an extension 3 in the form of a tongue that is disposed in close proximity to the top as clearly shown in Figure 1. The outer end of the tubular member terminates in a plane above the top of the tank and as the tubular member provides the filling spout for the tank,

-15 the outer end has secured thereto and following the circumferential curvature thereof collar pieces 4 to receive the cap 5 which is of the usual construction and is provided with a vent opening as shown, as well as a gasket.

Arranged in the tubular member is a vent pipe 6 which follows the longitudinal curvature thereof and has its outer end terminating adjacent the outer end of the tubular member, while its inner end is bent at an angle upon itself to provide a horizontal portion '7 which is arranged in contacting engagement with the top of the tank and terminates in a downturned end 8.

In Figure 3 I have illustrated a modified form of my invention which in fact is an attachment 50 for fuel tanks now in general use. The tank in 932. Serial No. 610,288

Figure 3 is indicated by the reference numeral 9 and includes the usual filling spout 10 that is provided with a cap 11.

The attachment includes only a tubular member 12 which is likewise in the form of a gooseneck and has one of its ends terminating adjacent the top of the tank 9 and this end is also provided with an extension 13 similar to the extension 3 and which likewise is disposed in close proximity to the top as shown.

The opposite end of the tubular member 12 extends into the filling spout 10 and is riveted or otherwise secured thereto through the medium of suitable securing means 14. The diameter of the tubular member 12 is less than the diameter of the filling spout 10, with the result a space 15 is provided and which acts in the capacity as an air vent.

From the above description and disclosure of the drawing, it will be obvious that I have provided an anti-theft device for fuel tanks that will prevent the siphoning of fuel therefrom, but at the same time will not interfere with the proper filling of the tanks. It is true that a siphoning tube can be disposed within the tubular member, but by providing the extension at the inner end of the tubular member and arranging the inner end and extension in close'proximity to the top of the tank itis impossible to dispose a siphoning tube within the fuel in the tank, and of course the space 15 is of a size to prevent the insertion of a siphoning tube therethrough, with the result I have provided a very simple but efiicient device to prevent the theft of fuel from tanks and especiallythe tanks of motor vehicles.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within thescope of the appended claim.

What I claim is."

An anti-siphoning device for a fuel tank comprising a curved tubular member having one end arranged in said tank and terminating adjacent the top thereof, a tongue formed with said end and disposed in close proximity to said top, said tubular member constituting the filling means for the tank and having its opposite end extending exteriorly thereof, a cap for the last mentioned end, and a vent pipe arranged within said tu-' bular member and following the longitudinal curvature thereof.

WILLIAM E. MORELAND. 

